Ask a financial advisor how they get paid and watch what happens. A good one answers in a sentence. A vaguer answer, the one that drifts toward “the initial consultation is complimentary,” is itself a piece of information. Roughly 27% of Americans work with a financial advisor, according to a 2024 YouGov survey, and very few of them can explain how that person actually earns a living from the relationship. That gap matters, because how financial advisors get paid quietly shapes every recommendation they make.
There’s no such thing as free financial advice. Someone is always paying, and the only question is whether it’s you directly, a product company handing your advisor a cut, or some blend of the two. Once you can see which arrangement you’re in, the advice stops being mysterious and starts being predictable.
How financial advisors get paid comes down to three buckets
The first model is commission. The advisor is paid by the product, not by you. Sell you a mutual fund with a sales load and they collect a slice of what you invest, typically 3% to 6% at purchase, according to industry fee surveys. The advice and the sale are the same act, which is the built-in tension: the recommendation that pays the advisor most is not always the one that serves you best.
The second model is fee-only. Here the advisor is paid solely by you, through a percentage of the assets they manage, a flat annual retainer, or an hourly rate. No commissions, no kickbacks from fund companies. Fee-only advisors who register with the SEC are held to a fiduciary standard, meaning they’re legally required to put your interests first.
The third model, fee-based, is the one that trips people up, because it sits one letter away from fee-only and a world apart in practice. A fee-based advisor charges you a fee and can also earn commissions on the products they sell you. The name sounds reassuring. The reality is a hybrid, where some of the advice is paid for by you and some is paid for by whoever makes the product being recommended.
The assets under management fee looks tiny and compounds into a fortune
Most fee-only and fee-based advisors bill ongoing work through the same mechanism: the assets under management fee. Its industry norm sits right around 1% a year for portfolios under $1 million, per Kiplinger’s reporting on advisory costs. On a $500,000 portfolio, that’s $5,000 a year, usually skimmed quarterly, whether your investments went up, down, or nowhere.
One percent sounds harmless. Follow it through time and it isn’t. The SEC’s Office of Investor Education ran a plain example: put $100,000 into a portfolio earning 4% a year, and over 20 years a 1% annual fee leaves you with nearly $30,000 less than a 0.25% fee would. The reason is that the fee comes out every single year, so it doesn’t just cost you the dollars taken today. It costs you all the future growth those dollars would have earned if they’d stayed invested. On the $500,000 portfolio, that $5,000 first-year fee grows in dollar terms as your balance grows, and the drag compounds decade after decade. None of this makes an AUM fee a ripoff. It makes it a real cost that deserves a clear-eyed look, not a shrug.
“Best interest” and “fiduciary” are not the same promise
This is where most explainers stop, and it’s the part that matters most. Two different legal standards govern who’s giving you advice, and the difference is not marketing.
Registered investment advisers owe you a fiduciary duty under the Investment Advisers Act. That means a duty of loyalty and a duty of care that runs across the entire relationship, all the time. Brokers, by contrast, operate under Regulation Best Interest, known as Reg BI, which the SEC put in force in 2020. Reg BI requires a broker to act in your best interest at the moment they make a recommendation, and it genuinely raised the old “suitability” bar. But the SEC itself describes Reg BI as drawing on fiduciary principles rather than being a fiduciary standard, and it was deliberately written to preserve the commission-based, transaction-by-transaction broker model.
Put plainly: a fiduciary must put you first, always, as an ongoing obligation. A “best interest” broker must not put themselves ahead of you at the point of a recommendation. The first is a standing promise. The second is a narrower one, switched on one transaction at a time. Both are real protections. They are not equal, and the person across the table is not required to volunteer which one applies to you.
One free document tells you which kind you’re dealing with
You don’t have to guess. Since the summer of 2020, the SEC has required advisors and brokerage firms to hand retail clients a document called Form CRS, the client relationship summary. It’s about two pages. It spells out the services offered, how the firm is paid, its conflicts of interest, and, under a required heading, whether the firm or its professionals have any legal or disciplinary history. Firms aren’t even allowed to soften that disciplinary section with reassuring language.
Better still, you can verify all of it yourself at investor.gov/CRS, a free SEC search tool that pulls up a firm’s record and its people. Ask any prospective advisor for their Form CRS. A fiduciary hands it over without flinching. Hesitation is its own answer.
Why the label decides whose interest the advice serves
When you know how an advisor is paid, you can predict the gravity acting on their advice, and you can shop accordingly. CFP Board requires its certified financial planners to act as fiduciaries when giving financial advice, which is one reason that credential is worth looking for. Three questions cut through nearly everything: Are you a fiduciary at all times, and will you put that in writing? Exactly how are you paid, and do you accept any commissions? May I see your Form CRS? The answers won’t just tell you how financial advisors get paid in the abstract. They’ll tell you whose side the person managing your money is actually on.
If you’d rather keep costs low from the start, it’s worth understanding how robo-advisors work and why low-cost index funds beat most stock pickers.